Ωhm

Flame-out on decel, my guess is spark plugs, unless, of course, they had just been changed recently.

Click on Link and go to page 6

TURN/BU fuse (YEL 20A)

That looks good, but its got be more than just ON/OFF push button switch.

What you are seeing is normal. Don't do anything. Next time you start any vehicle watch the gauges or bulbs, some will light or peg a gauge during CRANK, this is normal. Maybe not on a full electronic cluster, they do it a different way. Click on this Link and go to page 29.

Your reading voltage on a wire between the coolant gauge and the coolant sender. I said sensor above, but meant sender. This circuit is a input, not a voltage output. Circuit has nothing to do with switching ignition voltage (14vdc).

Violet wire is connected to G1 on the ignition switch. When ignition switch is in the START position, G1 is grounded. This will either light the TEMP bulb or peg the gauge. Circuit is known as "Bulb Check". Reading is voltage between the bulb/gauge and the switch/sensor.

If the remaining plugs are similar to the one shown, that's a good sign. Now back to the fuel pump and no pressure on shut down or key on. Anyone care to comment on OP's choice of fuel pump. Carter P74155 fuel pump kit.

Were the old plugs fouled out rich? Carbon/fuel soaked.

Are your spark plugs fouling out rich? Could be leaky injector(s). Loss of fuel pressure on shut down.

Video shows slow pressure build up when cranking and check valve holds no pressure when shut off. Check valve should hold pressure for at least one hour. Vehicle could be starving on fuel.

Fusible Links until someone can come up with a rating for each link used. EDIT: Just realized Fuel Injection related only.

Its sole purpose is to drop voltage between the battery and the fuel pump. When 4.0L was first introduced (without ballast), people complained pump was too noisy. The ballast helped quiet it down. Has no affect on pump requirements. Ballast is bypassed during crank and WOT.

Look inside the distributor cap for carbon tracking.

When you connected the fuel pump pressure gauge was the vehicle sputtering and backfiring while you were taking your readings? Were the gauge readings steady during this or bouncing around? Gauge you used could be reading low. Also connect voltmeter across the fuel pump ballast resistor and see if voltage changes during sputtering, backfiring and hesitation. What is the voltmeter reading? Ohmmeter the ballast, could be faulty. What is the ohmmeter reading? Wiggle contacts.

I would call that good. Without having to ask everyone to measure their O2 sensor heater resistance, to see if this is in the ballpark. Faulty O2 heater circuit component side would be open circuit or zero ohms between those two pins.

Would it be possible to make a template for the business cards? Ten (10) per sheet. This way one can take the template and print as many cards as needed. Of course donation still required for template usage. Posted as a Word document.

Charcoal canister uses the Air Box to bleed off fumes. Go to page 75

Don't run manifold vacuum to the fuel tank. Just hook line to charcoal canister and let it vent to air from there.

Plug vacuum line to EGR. This disable EGR valve. Connect fuel tank fumes to charcoal canister. Vacuum canister is needed for HVAC doors during WOT conditions. MAP hooked up to vacuum?

Vehicle harness pinned out good for A,B&C. One more check is needed at the component side. Pin A to B for continuity (O2 heater). 88electrical manual shows 6Ω's. If this shows good, suspect O2 sensor, the component. O2 voltage needs to swing rapidly between Rich and Lean, as stated above. If new O2 doesn't solve your problem, we need to go back to REM and FT values.

You got people drooling with those pictures. Welcome.

MS XP powerpoint is saved two (2) ways. 1. Saved as .ppt allows you to edit and save the file. 2. Saved as .pps automatically launches the slide show. Which one do you have? I think you'll need .ppt in order to do anything with the file.

Using REM, find your Fuel Trim values. This will determine if you're running Rich or Lean.